Vehicle dump



E. R. BENSON AND M. s. GRAND-ALL" VEHICLE DUMP.

APPLICATION FILED DEC. 18. I919.

Patented Nov. M, 1922.

INVENTORS Patented Nov. 14, 1922.

entire star EDWARD R. BENSON, OF

MINNEAPOLIS, MINNESOTA, AND MILTON S. CRANDALL, 0F

SIOUX CITY, IOWA.

VEHICLE DUMP.

Application filed December 18, 1919.

T0 aZZ who-12bit may] canoe m Be it known that we, EDWARD B. BnNsoN and MILTON S. CRANDALL, citizens of the United States, and residents, respectively, of Minneapolis, in the county of Hennepin and State of Minnesota, and of Sioux City, in the county of lVoodbury and State of Iowa, have invented certain new and useful Improvements in Vehicle Dumps, of which the following is a specification.

The invention has for its primary object the production in a vehicle dump embodying a platform and a tilting vehicle support pivoted thereon, of improved mechanism for actuating and positively sustaining the sup port in any inclined position.

Furthermore the invention contemplates in a scales platform carrying a. tilting vehicle support, improved actuating means carried by the platform to actuate and positively sustain the support in any desired inclination and to in no way interfere with the free operation of the scales platform.

Still another object of the invention is the production in a platform having a tilting vehicle support of improved actuating means, comparatively simple and inexpensive in construction and requiring but a. minimum amount of ower.

With these and other objects in view, the invention consisting in the construction, combination and novel arrangement of parts, will be fully understood from the following description, reference being had to the accompanying drawings, which form a part of this application and in which like characters of reference indicate corresponding parts throughout the several views, of which,-

Fig. 1 is a fragmentary vertical section of a scales platform equipped with the preferred embodiment of our invention and taken approximately on the line 11 of Fig. 2;

Fig. 2 is a transverse section of the same taken on the line 22 of Fig. 1 and;

Fig. 3 is an enlarged front elevation of the jack, parts being cut away.

Referring to the illustrations, the platform particularly shown includes a scales platform having a flooring, 4, supported by beams, 5, the flooring is provided with an opening, 6, in which is mounted a tilting vehicle support including a flooring, 7, mounted on longitudinal beams, 8, pivoted as at 9, to the scales platform.

From the platform depend U-shaped Serial No. 845,863.

frames, 10, suitably secured to beams, 55, and interconnected at their lower ends by a pair of cross members, 11, between which is interposed a sleeve, 12, through which freely slides a threaded shaft, 13, the upper end of which is provided with head, 14, pivoted on a wrist pin, 15, carried by suitable bearings, 16,1nounted on the under side of a cross member, 17, interconnecting the tilting beams, 8.

Positioned above the sleeve, 12, is a bevelgear, 18, having on its underside a hub, 19. The adjacent ends of the sleeve and said hub are provided with ball races, 20, between which are interposed ball bearings, 21, to insure frictionless operation of the gear. The upper face of the gear is provided with a hub, 22, threaded on the shaft, 13. The opposite sides of the gear, 18, are intermeshed with an idler bevel pinion, 28, and a drive pinion, 24:, said idler pinion being mounted freely on one of two trunnions, 25, on the sleeve, 12, and journaled in suitable bearings, 26, mounted on the cross members, 11. Disengagement of the gear, 18, from its companions, is prevented by means of a yoke, the web of which is formed with a collar, 27, which freely encircles the threaded shaft, 13, and the arms, 28, of which are pivoted coaxially with the trunnions, 25. The gear, 24, is secured to a shaft, 29, journaled in a suitable bearing, 30, on the frame members, 11; and carrying a sprocket wheel, 31, connected by a sprocket chain, 32, with a relatively larger sprocket wheel, 33, rotatably supported by a suitable frame, 34, mounted on the platform; and adapted to be manually rotated. I

It is now clear that the tilting support, mounted to swing vertically on its pivot, 9, is readily raised and lowered according to the direction of rotation of the hand wheel, 33, it is also obvious, that the ack shaft will sustain the support in any inclined position.

Having thus described our invention what we claim as new and desire to secure by Letters Patent of the United States, is,

1. In a vehicle-dump, a platform, a vehicle-tilting support pivoted thereon, a sup porting frame depending from the platform, and including bearing supports, bearings mounted on the bearing supports, a threaded jack-shaft operable to lift the vehicle support, and disposed between the bearings, a

guide sleeve on the shaft and having trui1- nions joiirnaled in said hearings whereby the shaft may osoillate, a gear threaded on the shaftand resting on the sleeve, a yoke pivoted on the trui'inions to prevent displacement of the gear and means for driving the gear in either direction.

2. In a vel1iele fhnnp, a platform, vehicletilting means thereon, and operating mechanism therefor comprising a supporting "frame including: side members depending from the side portions of the t'rarne and. cross-menibers interconnecting the lower ends of said depending members, a threaded shatt disposed between the cross-members, a sleeve freely encircling the shaft and having trunnions, hearings on the cross-members for pivotally supporting the trunnions, a bevel-gear threaded on the shaft and rotatably supported by the sleeve, a yoke having its arms pivoted coaxially with the trunnions, the Web of the yoke being positioned to prevent upward movement of the gear, a bevel-gear rotatable coaxially With the trnnnions and inte-rmeshed with said first gear, a horizontal shaft on which said second gear is fixed, and

means on the platform for driving Said latter shaft.

In testimony whereof We have hereunto set our hands this 4th day of October, 1919.

EDXVARD It. BENSON; MILTON S. CRANDALL. 

